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Supported eBook Formats

KDP supports a variety of formats. Below, you’ll find information about which formats we recommend, tools you can use, and device compatibility.

As you prepare your eBook, consider whether your content should have a fixed or reflowable format. For help formatting an eBook, view our resources.

Note: To view which languages you can publish in, visit our guide on Supported Languages.

After August 1, 2021, we will no longer support MOBI files when publishing new or updating previously published reflowable eBooks. Instead, use EPUB, DOCX or KPF formats, see our Frequently Asked Questions for more information. MOBI files are still accepted for fixed-layout eBooks.

File submission limit

In order to prevent delays in our quality review process, we may limit the number of books a user can submit for publishing at the same time, or within a specific timeframe.

Format Overview & Tips Tools to use* Compatible with this device(s)
Microsoft Word (DOC/DOCX) Most DOC/DOCX files convert well to eBooks. However, some files with complex formatting may not convert as well.

Use Kindle Previewer to check if your eBook converted successfully.

For details on formatting, see our eBook Manuscript Formatting Guide.
For details, visit Microsoft Support.
  • Fire tablets
  • Kindle App**
Kindle Package Format (KPF) Using KPF files allows your eBook to easily format an fit all Kindle devices. It’s a go-to method for avoiding any formatting issues.

You can create a KPF file using Kindle Create.

What are the benefits of using Kindle Create?
  • Kindle Create takes care of typesetting your eBook so that it works well on all Kindle devices and applications, including tablets, phones, and E-readers.
  • Select from a variety of themes and styles to customize the look and feel of your eBook.
  • Easily create a table of contents page and Kindle Interactive TOC for your eBook.
  • Insert and place high quality images in your eBook.
  • Preview how your eBook looks before publishing.

If you want to change from reflowable to Print Replica or vice versa, you can unpublish the previous version and then add it as a new title using the desired format.
For more information on how to install or use Kindle Create, check out our Getting Started with Kindle Create page.
  • Fire tablets
  • Kindle App**
EPUB We support books in EPUB format that meet the specifications outlined in the Kindle Publishing Guidelines. Use any third-party tool available on the internet to create your EPUB file.

We recommend validating the file with Kindle Previewer before you upload your book.
  • Fire tablets
  • Kindle App**
  1. Save your HTML file as Web Page, Filtered (HTM / HTML) (PC) or Web Page (HTM) (Mac). This will create a folder containing the HTML manuscript along with the image files.
  2. Compress into a ZIP file before uploading to KDP. If you don't have images in your manuscript, you can upload your HTML file without compressing it into a ZIP file.

Check out our Help pages for HTML-specific details:
  • Notepad (PC), or TextEdit (Mac)
  • Microsoft Word,
  • Any third-party tool available on the internet.
  • Kindle App**
MOBI We support fixed format books in MOBI that meet the specifications outlined in the Kindle Publishing Guidelines.

For reflowable eBooks, upload a EPUB, DOCX, or KPF file instead.

(.prc) files created with the legacy program MobiPocket Creator are no longer supported.
Use any third-party tool available on the internet to create your MOBI file.

We recommend validating the file with Kindle Previewer before you upload your book.
  • Fire tablets
  • Kindle App**
  • Kindle E Ink
Rich Text Format (RTF) We support RTF files.

RTF is readable across many programs and platforms and it’s easy to use.
  • Microsoft Word
  • Kindle App**
Plain Text (TXT) We support TXT files for manuscripts that do not contain images. Since KDP converts plain text to HTML, image locations referenced in a TXT file will not convert successfully.
  • Notepad
  • Microsoft Word
  • Fire tablets
  • Kindle App**
  • Kindle E Ink
Adobe PDF (PDF) We accept PDF files, but they can contain embedded formatting and/or images that don't convert well to eBooks.

At this time, KDP only supports uploaded PDFs in the following languages: English, French, German, Italian, Portuguese, Spanish, Catalan, Galician, and Basque.

If you'd like to upload a PDF file for your book, preview it before you publish. If you see any issues or if your book doesn't look the way you want it to, we recommend converting your PDF to a Word document and formatting it according to our eBook Formatting Guide.

You can also try using Kindle Create.
  • Adobe Acrobat
  • Microsoft Word
For more information, check out this YouTube video.
  • Fire tablets
  • Kindle App**
  • Kindle E Ink
* These are suggestions provided by KDP. However, you’re welcome to use the service or program of your preference to create your eBook.
** Kindle App is available for iOS, Android, Mac, and PC.

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